Type-writing machine.



J. T. SCHAAPF.

TYPE WRITING MACHINE.

APPLICATION FILED 113.15, 190s.

Patented Oct. 5, 1909.

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J. T. SCHAAFP.

TYPE WRITING MACHINE.

' APPLICATION FILED rm. 15, 1908.

Patented 0613. 5, 1909.

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J. SGHAAEF. TYPE WRITING MACHINE.

APPLICATION FILBD'PEB. 15, 1908.

Patented Oct. 5, 1909.

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JOHN T. SCHAAFF, OF WASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR TO UNIONTYPEWRITER COIYIPANY, OF JERSEY CITY, NEW JERSEY, A CORPORATION OF NEWJERSEY.

TYPE-VJRITING MACHINE.

To all whom it may concern:

Be it known that I, Join T. Scrraxrr, citizen of the United States, andresident of Washington, District of Columbia, have invented certain newand useful Improvements in Type-\Vriting Machines, of which thefollowing is a specification.

My invention relates to typewriting machines and more particularly toribbon mechanism.

One object of my invention is to provide simple and efiicient mechanismwhereby any of a plurality of fields of a ribbon having fields ofdifferent characteristics may be brought into operation at will.

A further object of my invention is to provide means of the characterspecified in which, when the platen is shifted, there is an automaticcontrol of the ribbon vibrating mechanism to compensate for thevariation of the printing point due to the shift of the platen.

A further object of my invention is to provide means operable at will torender the ribbon vibrating mechanism inoperative to move the ribbon tothe printing point so that mimeograph sheets may be prepared on themachine.

A further object of my invention is to provide means producing acrosswise feed of the ribbon to use difierent widthwise portions thereofin order to more thoroughly exhaust the ribbon.

Still another object of my invention is to provide means operable atwill to render the ribbon vibrating mechanism operative to effect acrosswise feed of the ribbon for substantially the entire width thereofor for only the width of a given field.

To the above and other ends which will hereinafter appear my inventionconsists in the features of construction, arrangements of parts andcombinations of devices to be hereinafter set forth and particularlypoint ed out in the appended claims.

In the accompanying drawings wherein like reference characters indicatecorresponding parts in the different views, Figure l is a vertical frontto rear sectional view of a typewriting machine embodying my invention,parts unnecessary to an understanding of the invention being omitted orbroken away. Fig. 2 is a transverse vertical sectional view of the samelooking toward the Specification of Letters Patent.

Application filed February 15, 1908.

rear of the machine. Fig. 3 is a detail skele- Patented Oct. 5, 1909.

Serial No. 416,081.

tonized diagrammatic side elevation showing portions of the ribbonvibrating mechanism, the ribbon being shown at the printing point inposition to print from the upper or black field and with the platen inlowercase position. Fig. 4: is a view that corresponds to Fig. 3 exceptthat the parts are in the positions they assume when the upper field isat the printing point and the platen has been shifted for upper casewriting. Fig. 5 is a view which corresponds to Fig. 3 except that thelower or red field of the ribbon is shown in use with the platen inlowercase position. Fig. 6 corresponds to Fig. 5 except that the partsare in the positions they assume when the platen has been shifted forupper case writing. Fig. 7 is a detail side elevation of a portion ofthe shifting mechanism of amodified construction. Fig. 8 is a view thatcorresponds to Fig. 3 except that the parts are in the positions theyassume when the cross feed is being effected on the upper or black fieldof the ribbon, the ribbon being shown in the view at the printing point.Fig. 9 is a view which corresponds to Fig. 8 except that the parts areshown adjusted to effect a cross feed of the ribbon substantially theentire width thereof, the ribbon being shown in printing or operativeposition.

I have shown my invention in the present instance embodied in a frontstrike machine though it should be understood that said invention may beemployed in other styles of typewriting machines.

The frame of the machine comprises a base 1, corner posts 2 and a topplate 3. Fixed guide rails et are supported on the top plate and haveoppositely disposed grooved faces for cooperation with anti-frictionballs 5 that are likewise received in oppositely grooved rails 6connected to or forming part of a carriage 7 which carries a rotativecylindrical platen 8 and is adapted to travel from side to side of themachine. A platen shaft 9 for the platen is supported in a shiftableyoke-like platen frame 10 supported at 11 upon a shift bar 12 which isbent at its ends to form depending arms 13 one at each side of themachine. These arms are pivotally connected at l-t to rearwardlyextending crank arms 15 secured to a rock shaft 16 mounted at its endson cone pivot screws 1'? which extend through tapped openings in thebase 1 of the machine. The crank arms 15 are extended forwardly and thenupwardly beyond the rock shaft to form key levers 13 provided withfinger keys 19. A depression of either of the finger keys 19 effects anupward shifting movement of the platen to move it to the upper caseposition. The carriage 7 is connected by a band 20 with a spring drum 21(see Fig. 2) and suitable mechanism (not shown) is provided foralfording a stepbystep feed movement of the carriage at each depressionof a printing key.

The printing mechanism is not shown but it will be understood that itmay consist of a series of upwardly and rearwardly striking type barswhich impact against the front face of the platen. The spring drum 21 isprovided with a beveled gear 22 which may be operatively connected tothe drum by a pawl 21 and ratchet 21 in essentially the same manner asthe No. 6 Remington machine, for instance, and this gear 22 coiiperateswith a beveled gear 23 which surrounds a driving shaft 24 that extendstransversely of the machine and turns in suitable bearings and 26depending from the top plate of the machine. The beveled pinion 23 has ahub 27 which loosely surrounds the shaft and is connected thereto by apin 28 and a slot 29, the pin projecting from the shaft 24 and the slotbeing formed in the hub 27. The inner end of the hub 27 bears againstthe bearing lug so as to prevent a movement of the hub 27 in its gearwheel 23 along the shaft in one direction, these parts being preventedfrom movement longitudinally of the shaft in the opposite direction bythe engagement between the beveled gears 22 and Beveled gears 30 and 31are secured to the shaft 24 near the opposite ends thereof forcooperation with beveled gears 32 and 33, respectively. The shaft 24 ismounted in its bearings so that it may receive a longitudinal movementto bring about the engagement or disengagement be tween the two sets ofcooperative gears 30 and or 31 and 33. The gear 32 is secured to a shaft34 which extends fore and aft of the machine and is mounted in suitablebearings such as lugs 34 depending from the top plate of the machine.The forward end of the shaft 34 carries a beveled pinion 35 cooperativewith a beveled gear 36 which is carried by an upright shaft received ina bearing 37 which depends from the top plate of the machine. The upperend of this vertical shaft is connected to a ribbon spool 38 at theleft-hand side of the machine. The gear connection between the righthand ribbon spool 39 and the gear 33 is the same as that just describedbetween the spool 38 and the gear 32. Thus, the upright shaft of theribbon spool 39 turns in a bearing 40 and is provided at its lower endwith a beveled gear 41 which meshes with a beveled pinion 42 secured tothe forward end of a shaft 43 I which extends fore and aft of themachine and the rear end of which is connected to the beveled gear 33.

From the foregoing description it will be understood that thelongitudinal disposition of the shaft 34 determines which of the tworibbon spools 38 and 39 shall be geared to rotate with the spring drumduring the stepby-step movement of the carriage.

A ribbon A extends from spool to spool and passes through guide openingsin a bifurcated ribbon guide or vibrator 44 which is situated near theprinting point, the types striking between the arms of the bifurcatedvibrator in the ordinary manner. The ribbon A is preferably divided intolongitudinally extending fields of different characteristics; that is tosay, the upper field a of the ribbon, for instance, may be impregnatedwith black ink, whereas the lower field 6 may be impregnated with redink or with an ink of some contrasting color; or, if desired, the fielda may be impregnated with record ink and the field Z) with copying ink.The ribbon vibrator 444 has a pivotal and pin and slot connection at itslower end as at 45 with a forwardly extending arm 46 of a vibratoractuating lever which, in the present instance, consists of a bell crankor angular lever having the substantially horizontally disposed arm 46and a depending substantially vertically disposed arm 47, the leverbeing pivoted to a depending lug 48 by a headed pivot screw 49. The arm47 of the lever is connected to one end of a contractile spring 47. Theopposite end of the spring is secured to a pin projecting from the topplate of the machine, the spring tending to move the angular lever andthe parts controlled thereby to normal position with the arm 47 of thelever bearing against a stop pin 47. A second actuating lever is pivotedat 50 to a depending arm 51. This lever is also preferably an angular orbell crank lever having an upwardly ex- 110 tending substantiallyvertically disposed arm 52 and a forwardly projecting substantiallyhorizontally disposed arm 53. The arms 47 and 52 of the two angularlevers are substantially parallel and have longitudinally 5 extendingsubstantially parallel slots 54 and 55 respectively, for the receptionof pins formed by the stems of shouldered, headed screws 56 and 57.These screws project laterally from a link or connecting member 58 120which constitutes an intermediate actuating connection between the twoangular levers for transmitting motion from one of said angular leversto the other when the lever 5253 is turned on its pivot 50.

A depending link 59 is pivoted at 60 to the forwardly extending leverarm 53 and is provided at its lower end with a hook-like engaging member61 which is adapted to extend through an opening 61 in the uni- 130versal bar (52 when the link is in the full line position shown in Fig.l. A contractile spring (33 is connected at one end to the forward endof the lever arm and is connected at its opposite end to the link 59.This spring exerts a pressure to normally maintain the engaging portion61 on the link in the opening 61 in the universal bar as shown in Fig.l. 3. rock shaft 64 extends from side to side of the machine and ismounted to turn in hearings in the base thereof. This rock shaft isprovided with an eccentric (35 which is adapted to cooperate with thelink 59 in order to force it to the dotted line position shown in Fig. 1or to enable it to be moved by aspring 63 to the full line positionwhere it engages with the universal bar 62. It will be seen that whenthe link is in the dotted line position that the engaging member (31 onthe link 59 is released from and out of the path of the universal barand that an actuation of the universal bar at this time is ineffectiveto transmit motion to the link 59 and the parts controlled thereby toactuate the ribbon vibrator. The rock shaft 6% extends beyond the baseof the machine to the outside thereof where it is provided with a fingerpiece 66 to facilitate a turning of the eccentric 65 through the rockshaft to either the full or dotted line position shown in Fig. 1. henthe finger piece is uppermost the eccentric 65 will be maintained in thefull line position, whereas when the finger piece is turned down to thedotted line position shown in Fig. 1 it will turn the rock shaft andthereby effect a movement of the eccentric to the dotted line position,to disengage the link 59 from the universal bar to render the ribbonvibrator mechanism inoperative to move the ribbon to the printing point.The pun pose of thus freeing the ribbon vibrating mechanism from thecontrol of the universal bar 62 and consequently from control of theprinting keys is to render the machine useful for producing mimeographsheets. The universal bar 62 extends transversely of the machine beneaththe entire system of printing key levers G7 which are pivoted to thebase of the machine at O8 and are provided with the usual finger keys(39. The universal bar 62 may be the universal bawhich actuates theescapement mechanism or may be a separate universal bar operative foractuating the ribbon vibrator mechanism as may be desired.

The printing key levers may be connected by any suitable actuating meansto the printing instrumentalities, such printing instrumentalities andconnections not being shown in the present instance. The printing keylevers (57 are restored to normal position by springs 70 each secured atone end to a fixed portion of the machine as indicated at 71 andconnected at its opposite end to a key lever. The universal bar 62 isbent at its ends to form arms T2 pivoted at '73 to the base of themachine. A restoring spring 74 bears against the bottom of each of thearms 72 to effect an upward movement of the universal bar 2 to normalposition. Each depression of a printing key, when the parts areoperatively connected, effects an actuation of the angular lever 5253which produces an actuation of the angular lever 464c7 through theintermediate link or con necting device 58 so that the ribbon vibrator14 will be moved upwardly into the path of the type as it approaches theprinting position, as indicated for instance, by the movement of theparts from the position shown in Fig. 1 to those illustrated in Fig. 5.The member 58, as will be seen upon reference to Fig. 2, is providedwith a lateral projection 75 perforated to receive the reduced endportion 76 of a rod 77 threaded at its lower end as at 78 where it isreceived in a tapped opening in a lateral projection 79 which extendsfrom a. member 80. The adjustable connection between the rod 77 and themember 80 is effective to produce a lengthening or shortening of themembers 58, 77 and 80 which virtually constitute a link. A contractilespring 81 is connected at one end to a pin which projects laterally fromthe member 80 and is connected at its opposite end to a perforated ear83 formed on the projection 75.

The shoulder on the rod 77 formed at the junction between the reducedand enlarged portions of the rod acts to limit the relative movementbetween the rod and the member 58 toward each other and the spring 81tends normally to maintain a fixed relation between these parts with theshoulder on the rod 77 hearing against the lateral projection 75 on themember 58. The construction is such, however, that the parts 58 and 80may move away from each other under conditions which will hereinafterappear. The member 80 is provided at its lower end with a screw 84 whichis carried by and threaded into a tapped opening in the member 80 andextends into an inclined slot 8:) in a crank arm 86 which is secured tothe rock shaft 16. The pin or screw 84 likewise extends into a segmentalslot 87 on a crank arm 88 connected to the inner end of a rock shaft 89mounted to turn in a bearing in a bracket 90 and also adapted to turn ina bearing in an upwardly extending projection 91 on the base of themachine to which the bracket is secured by a screw 91 The outer end ofthe rock shaft 89 extends to the outside of the machine where it isprovided with an arm 92 which terminates in a finger piece 93. This armextends through a slot on a plate 94 (Fig. 1) secured to the frame ofthe machine and having depressions 95 and 96 therein. The arm 92 has aslight pressure toward the edge of the plate in which. the depressionsor recesses 95 and 96 are formed so as to snap into either of therecesses when the arm is brought into register therewith in order tolock the arm against accidental displacement from the position to whichit is adjusted.

The crank arm 86 and members 77 and 80 constitute a connection betweenthe rock shaft and platen shifting mechanism and the member 58 and thisconnection is automatically actuated to vary the position of the member58 relatively to the angular actuating levers when the platen isshifted, in order to automatically vary the throw of the ribbon vibratorto compensate for the change in the position of the printing point dueto the case shifting movement of the platen.

The members 92, .3, 89, 88 etc. constitute hand controlled means wherebythe connections between the member 58 and the platen shifting mechanismmay be varied in order to change the relation of the member 58 to theangular actuating levers and thereby vary the throw of the ribbonvibrator to bring any desired field of the ribbon to the printing pointat each printing operation. Thus, the arm 86 and the link 7780 betweenthe member 58 and the rock shaft 16 constitutes a connection wherebywhen the platen is shifted to the upper case position the pins 56, 57will be moved upwardly in the slots 5 1 and 55 respectively in the twoangular actuating levers so that the connecting device 58 is movedfarther away from the pivot 50 of the lower actuating lever and will bemoved toward the pivot 49 of the upper actuating lever, thereby varyingthe position of the connecting device or member 58 with refer ence tothe two angular levers and changing the leverage so as to produce agreater extent of throw of the ribbon vibrator during the actuation of aprinting key when the platen is in the uppercase position in order tocompensate for the change of the printing point from the position shownin Fig. 3 for instance to that illustrated in Fig. 4.

lVhen the operator desires to employ the upper field a of the ribbon itis merely necessary to depress the finger piece so as to bring the arm92 into engagement with the lowermost locking recess or notch 96 in theplate 94. The effect of this movement is to turn the arm 88 rearwardlywith the rock shaft 89 and to force the pin 84 down to the lower end ofthe slot 83 in the crank arm 86 as shown in Fig. 3. The effect of thismovement of the finger piece 93 is to move the connecting device 58downwardly from the position shown in Fig. 1 so as to bring saidconnecting device nearer to the pivot or fulcrum of the lever 5253 andto move it farther from the fulcrum of the lever 4:6t7 so that a shorterthrow of the ribbon vibrator will be effected than when the parts aredisposed as shown in Fig. 1, and the upper field of ribbon only will bemoved to the printing point indicated by the dotted line 0 in Fig. 8.However, if the platen should be shifted for upper case writing, the arm86 will be elevated to the position shown in Fig. 4-, thus automaticallyefiecting a change in position of the member 58 to bring it nearer tothe fulcrum as of the upper angnlar actuating lever so as to give anincreased extent of throw to the vibrator to compensate for thevariation in the position of the printing point from the dotted line 0indicated in Fig. 3 to that indicated in Fig. 4 which corresponds to theextent of case shift movement of the platen. lVhen the platen is loweredto the normal or lower case position shown in Fig. 3 the arm 86 will bemoved downwardly from the position shown in Fig. 4 to that indicated inFig. 3 and an automatic movement of the member 58 will be effectedto'change the extent of throw of the vibrator so as to compensate forthe variation of position of the printing point. It will be understoodthat the normal position of the vibrator in this case is not changed butthat a greater or less extent of throw is given thereto, depending onthe printing case position of the platen and it will also be seen thatthe fulcrums 49 and 50 of the angular actuating levers are unvariableand remain at all times fixed. The upward and downward movement of themember 58, whether eifected automatically during the case shiftingmovement of the platen or by an actuation of the finger piece 93, doesnot effect a movement of the angular levers or the vibrator from theirnormal positions since the move ment of the member 58 is an up and downmovement and the pins 56 and 57 on the member 58 move in the parallelslots in the angular actuating levers. It will be understood that thechange in the position of the member 58 is effected to change theeffective lengths of the lever arms 47 and 52 of the angular actuatinglevers; and I therefore refer herein to the means for effecting suchchange, as leverage changing devices or differential leverage mechanism.

It is sometimes desirable to effect a crosswise feed of the ribbonwithina given field where a polychrome ribbon or one having fields ofdifferent characteristics, is employed, in order to effectually useevery portion of the ribbon within the field. This is more especiallythe case where a relatively wide and a relatively narrow field isemployed as illustrated in the present instance. In order that suchcrosswise feed of the ribbon may be eflected I have provided aneccentric or cam 97 on the driving shaft 24:, and this cam is adapted tocooperate with an upwardly extending arm 98 of an angular actuatinglever, an arm 99 extending forassert wardiy fron'i said lover. Thebearing or the lever 98 loosely surrounds an eccentric 100 which iscarried upon a rock shaft 101 mounted atits inner end in a bearing in adepending arm 102, the outer end of the rock shaft receiving-a bearingin a support 102-3 on the frame. The outer end or this shaft extendsbeyond a side or the machine and is provided with a linger piece 10% bywhich the eccentric 100 may be controlled to vary the pivotal center ofthe angular lever 98 99. When the finger piece 10% is in the lowermostposition shown in Fig. 1 the pivotal center of the angular lever 9S99will be in the lowermost position and a turning of the eccentric 9? withthe shaft 24 at this time will result in effecting .a turning movementof the angular lever 9899 on its pivot, as shown in Fig. 8, and theeffect of this movement of the lever is to bringthe arm thereoi intocontact with a pin 105 which extends laterally from the member 58. Asthe arm 99 of the angular lever is elevated the member 58 will becarried upwardly with it against the tension of the springSl (see Fig.2) so as to automatically vary the position of the member 58 relativelyto the two angular levers which it connects. This movement of the device58 is etl'ected independently of the rod 77 and the devices associatedtherewith by reason of the contractile spring 81 which connects thedevice 58 and the rod '77. It will be understood that the eccentric 97receives a slow intermittent turning movement during the letter spacemovements of the carriage so that the turning of the eccentric 9? slowlyelevates and lowers the arm 99 and slowly changes the relation of thedevice 58 to the angular actuating lovers 52 53 and l0-lT. The automaticvariation in the throw of the vibrator thus etlected produces awidthwise or crosswise feed of the ribbon to vary the point of impact ofthe type thereon at each letter space movement of the carriage. Shouldthe operator desire to use this automatic 'osswise feed in connectionwith a ribbon ot a single color or characteristic as shown at B in F 9,then the linger piece 10': may be moved to the uppermost position shownin F to vary the pivotal center oi the angular lever 98 The effect ofthis movement is to produce an auton'iatic crosswise teed ot' the ribbonthroughout sul stantially the entire width thereof, it being understoodthat a greater extent of throw is given to the vibrator by thisadjustment oi the eccentric 100 and that the crosswise teed instead ofbeing: limited to a single lougitud'ual feed of the ribbon. as under theadjustment shown in Fig. 8. will extend substantially throughout thewidth of the ribbon.

In F 5 and 6 I have shown an adjustment of the parts due to thepositioning ot' the. arm 92 in the upper notch or recess 95 in its guideplate. The cfi'ect of this adjustment is to move the pin 8% to the upperend of the slot 85 in thecrank arm and to retain it in this position.This adjustment movesthe member 58 nearer the fulcrum l9 oi the upperangular actuating lever and farther from the pivot 50 of the lowerangular actuatingvlever so as to vary the leverage and thus eli'ectalonger throw of the ribbon vibrator to bring the lower or red field ofthe ribbon to the printing point at each printing. operation whether theprinting point e on the platen be in the lower case or in the upper caseposition, as will be seen by an inspection of Figs. 5 and 6 which showthe vibrator in the operative positions. ll'hen the parts are set sothat the red field will be brought to the printing point at eachprinting;operation, and the platen is shifted from the lower to theupper case position as shown in Fig. 6, the arm 80 will be turned toeffect automatically a change in the position of the member 58relativelyto the angio lar actuating levers and thereby position the parts so thata further extent of throw is given the vibrator at each printingoperation, to compensate for the variation in the printing point byreason ol. the shil t of the platen from the lower to the upper case position.

It will be understood that there is no crosswise feed of the ribbon whenthe lower or red field is employed as this field is seldom used andthere is no necessity for elifecting a crosswise feed of the ribbonwithin this field. No crosswise feed is effected at this time becausethe device 58 is elevated to a position where the pin 105 thereon is outof the path of the arm 99 when it is actuated by the rotation of theeccentric 97. It should also be understood that there will be no crossfeed of the ribbon when the arm 10% is set in the position shown in Fig.8 and the platen is shifted to the upper case position. This is due tothe fact that the case shitting movement of the platen elevates themember 58 to a position where the arm 99 in its automatic operation willbe ineffective on the pin 105; but the cross feed of the ribbon will beeiiected when the platen is in the normal or lower case position.

in Figv'l- I have illustrated a modified form of connection between therock shaft 10 and an arm 80. In this construction a pin 100 extendslaterally from the crank arm 80 which is loosely mounted upon the rockshaft and said pin is received in a slot 107 which extends transverselyin a crank arm 10% secured to the rock shaft 10 by a setscrew 109 or byany suitable means. A laterally extending projection 110 is formed onthe crank arm 10S and is tapped for cooperation with a screw 111 whichconstitutes astop or abutment that practically forms one end of the slot107. By these means the length of the slot may be varied so thatdifferent extents of lost motion may be provided between the crank arm108 and the loosely mounted arm 86 or the screw may be turned in to apoint where it will engage the pin 106 when it is seated in the upperend of the slot, thus preventing any lost motion between the parts. Thiscon strnction enables a movement of the platen shifting mechanism to anydesired extent to take place before movement is transmitted through therock shaft 16 to the connecting device 58 so that said device 58 may bemoved varying extents as may be required by the case shift movements ofthe platen. The change in the extent of throw of the vibrator due to theshifting movement of the platen may thus be nicely regulated. I preferto provide a dwell 112 at each end of this cone slot as shown in Fig. 7to the end that there will be no tendency of the screw or pin 8% to slipup or down the cam slot 85, accidentally during the operation of themachine.

Various changes may be made without departing from the spirit and scopeof my invention.

IV hat I claim as new and desire to secure by Letters Patent is 1. In atypewritmg machine, the combination of a platen, means for shifting saidplaten to change the case posit-ion thereof, a vibrator, means wherebysaid vibrator remains fixed during the case shifting movements of theplaten, a ribbon having fields of different characteristics, and meansfor controlling the vibrator to bring any desired field of the ribbon tothe printing point whether the platen be in the upper or lower caseposition.

2. In a typewritmg machine, the combination of a platen, means forshifting said platen to change the case position thereof, a vibrator, anactuating lever connected with said vibrator and turning on a fixedaxis, means whereby said ribbon vibrator remains fixed during the caseshifting movements of the platen, a ribbon having fields of difierentcharacteristics, and means for controlling the vibrator to bring anydesired field of the ribbon to the printing point whether the platen bein the upper or lower case position.

3. In a typewritmg machine, the combination of a platen, means forshifting said platen to change the case position thereof, a ribbonvibrator, means whereby said vibrator remains fixed during the shiftingmovements of the platen, compensating means controlled by the platenshifting means for enabling the vibrator to bring the same portion ofthe ribbon to the printing point irrespective of the case position ofthe platen, a ribbon having fields of different characteristics, andhand controlled means operable at will for determining which field ofthe ribbon shall be brought to the printing point at each printingoperation.

1. In a typewritmg machine, the combina= tion of a platen, means forshifting said platen to change the case position thereof, a ribbonvibrator, an actuating lever connected with said vibrator and turning ona fixed axis, means whereby said ribbon vibrator remains fixed duringthe case shifting movement-s of the platen, compensating meanscontrolled by the platen shifting means for enabling the vibrator tobring the same portion of the ribbon to the printing point irrespectiveof the case position of the platen, a ribbon having fields of differentcharacteristics, and hand controlled means operable at will fordetermining which field of the ribbon shall be brought to the printingpoint at each printing operation.

5. In a typewritmg machine, the combination of a platen, means forshifting said platen to change the case position thereof, a vibrator,means whereby said vibrator remains fixed during the case shiftingmovements of the platen, means for controlling the vibrator to bring thesame portion of the ribbon to the printing point whether the platen bein the upper or lower case position, and means operable at will forrendering said vibrator inoperative to carry the ribbon to the printingpoint.

6. In a typewriting machine, the combination of a platen, means forshifting said platen to change the case position thereof, a vibrator,means whereby said vibrator remains fixed during the case shiftingmovements of the platen, an actuating lever connected with said vibratorand turning on a fixed axis, means for controlling the vibrator to bringthe same portion of the ribbon to the printing point whether the platenbe in the upper or lower case position, and means operable at will forrendering said vibrator inoperative to carry the ribbon to the printingpoint for producingmimeograph sheets.

'7. In a typewritin machine, the combination of a platen, means forshifting said platen to change the case position thereof, a ribbonvibrator, means whereby said vibrator remains fixed during the shiftingmovements of the platen, compensating means controlled by the platenshifting means for enabling the vibrator to bring the ribbon to theprinting point irrespective of the case position of the platen, andmeans operable at will for rendering said vibrator inoperative to carrythe ribbon to the printing point for producing mimeograph sheets.

8. In a typewritmg machine, the combination of a platen, means forshifting said platen to change the case position thereof, a ribbonvibrator, an actuating lever connected with said vibrator and turning ona fixed axis, means whereby said ribbon vibia tor remains fixed duringthe case shitting movements of the platen, con'ipensating meanscontrolled by the platen shifting means for enabling the vibrator tobring the ribbon to the printing point irrespective of the case positionof the platen, and means operable at will for rendering said vibratorinoperative to carry the ribbon to the printing point, for producingmimeograph sheets.

9. In a typewriting machine, the combination of a platen, means forshitting said platen to change the case position thereof, a vibratormeans whereby said vibrator remains fixed during the case shittingmovements of the platen, a ribbon having fields of difierentcharacteristics, means for controlling the vibrator to bring any desiredfield of the ribbon to the printing point whether the platen be in theupper or lower case position, and means operable at will for renderingsaid vibrator inoperative to carry the ribbon to the printing point, forproducing mimeograph sheets.

10. In a typewriting machine, the combination of a platen, means forshifting said platen to change the case position thereof, a vibrator,means whereby said vibrator remains fixed during the case shiftingmovements of the platen, an actuating lever connected with said vibratorand turning on a fixed axis, a ribbon having fields of differentcharacteristics, means for controlling the vibrator to bring any desiredfield ot the ribbon to the printing point whether the platen be in theupper or lower case position, and means operable at will for renderingsaid vibrator inoperative to carry the ribbon to the printing point, forproducing mimeograph sheets. 7

11. In a typewriting machine, the combination of a platen, means forshifting said platen to change the case position thereof, a ribbonvibrator, means whereby said ribbon vibrator remains fixed during theshitting movements of the platen, compensating means controlled by theplaten shitting means for enabling the vibrator to bring the sameportion of the ribbon to the printing point irrespective of the caseposition of the platen, a ribbon having fields oft differentcharacteristics, hand controlled means operable at will for determiningwhich field of the ribbon shall be brought to the printing point at eachprinting operation, and means operable at will for rendering saidvibrator inoperative to carry the ribbon to the printing point, forproducing mimeograph sheets.

12. In a typewriting machine. the combination of a platen. means forshifting said platen to change the case position thereof, a ribbonvibrator, an actuating lever connected with said vibrator and turning ona fixed axis, means whereby said ribbon vibrator remains fixed duringthe case shifting move- 5a, ments of the platen, compensating meanscontrolled by the platen shitting means for enabling the vibrator tobring the same portion of the ribbon to the printing point irrespectiveof the case position of the platen. a ribbon having fields of differentcharacteristics, hand controlled means operable at will for determiningwhich field ot the ribbon shall be brought to the printing point at eachprinting operation, and means operable at will for rendering saidvibrator inoperative to carry the ribbon to the printin point, forproducing mimeograph sheets.

13. In a typewriting machine, the combination of a platen, means forshifting said platen to change the case position thereof, a vibrator,means whereby said vibrator remains fixed during the case shittingmovements of the platen, motion transmitting devices tor actuating saidvibrator, and means controlled by the case shitting movements of theplaten to cited a change in the relation of the parts of said motiontransmitting devices in order that the same portion of the ribbon may bebroughtto the printing point whether the platen be in the upper or lowercase position.

14:. In a typewriting machine, the combination of a platen, means forshifting said platen to change the case position thereof, a vibrator,means whereby said vibrator re mains fixed during the case shiftingmovements of the platen, motion transmitting de vices for actuating saidvibrator, means controlled by the case shifting movements of the platento eitect a change in the relation of the parts of said motiontransmitting devices in order that the same portion of the ribbon may bebrought to the printing point whether the platen be in the upper orlower case position, a ribbon having fields of differentcharacteristics, and hand actuated means operable at will fordetermining which field of the ribbon shall be brought to the printingposition at each printing operation.

15. In a typewriting machine. the combination of a platen, means forshifting said platen to change the case position thereof, a vibrator,means whereby said vibrator re mains fixed during the case shittingmovements of the platen, motion transmitting devices for actuating saidvibrator, means con trolled by the case shifting movements of the platento effect a change in the relation of the parts of said motiontransmitting devices in order that the same portion of the ribbon may bebroughtto the printing point whether the platen be in the upper or lowercase position, and hand operated means operable at will for renderingsaid vibrator inoperative to move the ribbon to the printing point.

16. In a typewriting machine, the combination of a platen, means forshifting said platen to change the case position thereof, a

vibrator, means whereby said vibrator re mains fixed during the caseshifting movements of the platen, motion transmitting devices foractuating said vibrator, means controlled by the ease shifting movementsof the platen to effect a change in the relation of the parts of saidmotion transmitting devices in order that the same portion of the ribbonmay be brought to the printing point whether the platen be in the upperor lower case position, a ribbon having fields of differentcharacteristics, hand actuated means operable at will for determiningwhich field of the ribbon shall be brought to the printing position ateach printing operation, and hand operated means operable at will forrendering said vibrator inoperative to move the ribbon to the printingpoint.

17. In a typewriting machine, the combination of a platen, means forshifting said platen to change the case position thereof, a ribbonvibrator, means whereby said ribbon vibrator remains fixed during thecase shifting movements of the platen, differential leverage mechanismfor actuating said vibrator, and means under control of the platenshifting means for affecting said differential leverage mechanism so asto bring the same portion of the ribbon to the printing point at eachprinting operation whether the platen be in the upper or lower caseposition.

18. In a typewriting machine, the combi-- nation of a platen, means forshifting said platen to change the ease position thereof, a ribbonvibrator, differential leverage mechanism for actuating said vibrator,means under control of the platen shifting means for affecting saiddifierential leverage mechanism to vary the throw of the vibrator andthus to bring the same portion of the ribbon to the printing point ateach printing opera tion whether the platen be in the upper or lowercase position, and means operable at will for rendering said vibratorinoperative to move the ribbon to the printing point.

19. In a typewriting machine, the combination of a platen, means forshifting said platen to change the case position thereof, a ribbonhaving fields of different characteristics, a ribbon vibrator, meanswhereby said ribbon vibrator remains fixed during the case shiftingmovements of the platen, difi'erential leverage mechanism for actuatingsaid vibrator, means under control of the platen shifting means foraffecting said differential leverage mechanism so as to bring the samefield of the ribbon to the printing point at each printing operationwhether the platen be in the upper or lower case position, and meansoperable at will to determine which field of the ribbon shall be movedto the printing point.

20. In a typewriting machine, the combination of a platen, means forshifting said platen to change the case position thereof, a ribbonvibrator, means whereby the ribbon vibrator has the same normal positionirrespective of the case position of the platen, actuating meansoperative to give different extents of throw to the vibrator, meanscontrolled by the platen shifting means for aflect-ing said actuatingmeans to give a greater or less extent of throw to the vibratoraccording to the case position of the platen, and hand actuated meansoperable at will for controlling said actuating means to give adifferent throw to the vibrator.

21. In a typewriting machine, the combi nation of a platen, means forshifting said platen to change the case position thereof, a ribbonvibrator, means whereby the ribbon vibrator has the same normal positionirrespective of the case position of the platen, actuating meansoperative to give difierent extents of throw to the vibrator, meanscontrolled by the platen shifting means for affecting said actuatingmeans to give a greater or less extent of throw to the vibratoraccording to the case position of the platen, and hand actuated meansoperable at will to render said ribbon vibrator inoperative to move theribbon to the printing point.

22. In a typewriting machine, the combination of a platen, means forshifting said platen to change the case position thereof, a ribbonhaving fields of different characteristics, a ribbon vibrator, meanswhereby the ribbon'vibrator has the same normal posit-ion irrespectiveof the case position of the platen, actuating means operative to givedifferent extents of throw to the vibrator, and means controlled by theplaten shifting means for aifecting said actuating means to give agreater or less extent of throw to the vibrator according to the caseposition of the platen and so as to bring the same field of the ribbonto the printing point whether the platen be in the upper or lower caseposition.

23. In a typewriting machine, the combination of a platen, means forshifting said platen to change the case position thereof, a ribbonhaving fields of different characteristics, a ribbon vibrator, meanswhereby the ribbon vibrator has the same normal posit-ion irrespectiveof the case position of the platen, actuating means operative to givedifierent extents of throw to the vibrator, means controlled by theplaten shifting means for afiecting said actuating means to give agreater or less extent of throw to the vibrator according to the caseposition of the platen and so as to bring the same field of the ribbonto the printing point'whether the platen be in the upper or lower caseposition, and hand actuated means operable at will for controlling saidactuating means to move any desired field of the ribbon to the printingpoint at each printing operation.

2%. In a typewriting machine, the combination of a platen, means forshifting said platen to change the case position thereof, a ribbonhaving fields of different characteristics, a ribbon vibrator, meanswhereby the ribbon vibrator has the same normal position irrespective ofthe case position of the platen, actuating means operative to givedifferent extents of throw to the vibrator, means controlled by theplaten shifting means for afiecting said actuating means to give agreater or less extent of throw to the vibrator according to the caseposition of the platen and so as to bring the same field of the ribbonto the printing point whether the platen be in the upper or lower caseposition, and hand actuated means operable at will to render saidvibrator inoperative to move the ribbon to the printing point.

In a typewriting machine,the combination of a platen, means for shiftingsaid platen to change the case position thereof, a ribbon having fieldsof different characteristics, a ribbon vibrator, means whereby theribbon vibrator has the same normal position irrespective of the caseposition of the platen, actuating means operative to give differentextents of throw to the vibrator, means controlled by the platenshifting means for affecting said actuating means to give a greater orless extent of throw to the vibrator according to the case position ofthe platen and so as to bring the same field of the ribbon to theprinting point whether the platen be in the upper or lower caseposition, hand actuated means operable at will for controlling saidactuating means to move any desired field of the ribbon to the printingpoint at each printing operation, and hand actuated means operable atwill to render said vibrator inoperative to move the ribbon to theprinting point.

26. In a typewriting machine, the combination of a ribbon vibrator, twoactuating levers therefor, an intermediate connection between saidlevers, and means for moving said connection independently of saidlevers and nearer to the pivotal center of one lever and farther fromthe pivotal center of the other lever.

27. In a typewriting machine, the combination of a ribbon vibrator, twoactuating levers therefor, an intermediate connection between saidlevers, a platen, platen shifting mechanism, and means under control ofsaid platen shifting mechanism for shifting said connectionindependently of said levers.

28. In a typewriting machine, the combination of a ribbon vibrator, twoactuating levers therefor, an intermediate connection between saidlevers, platen, platen shifting mechanism, means under control of saidplaten shifting mechanism for shifting said connection independently ofsaid levers, and hand actuated means operable at will for shifting saidconnection.

29. In a typewriting machine, the combi nation of a ribbon vibrator, tworibbon vibrator actuating levers having substantially parallel arms, anintermediate connection between said substantially parallel arms, andmeans for shifting the connection independently of said levers andlongitudinally of said parallel arms.

30. In a typewriting machine, the combination of a ribbon vibrator, tworibbon vibrator actuating levers having substantially parallel arms, anintermediate connection between said substantially parallel arms, aplaten, platen shifting means, and means under control of said platenshifting means for shifting said connection independently of said leversand longitudinally of said substantially parallel arms.

31. In a typewriting machine, the combination of a ribbon vibrator, tworibbon vibrator actuating levers having substantially parallel arms, anintermediate connection between said substantially parallel arms, aplaten, platen shifting means, means under control of said platenshifting means for shifting said connection independently of said leversand longitudinally of said substantially parallel arms, and handactuated means operable at will for shifting said connection.

32. In a typewriting machine, the combination of a ribbon vibrator, twoactuating levers therefor, an intermediate connection between saidlevers, means for moving said connection independently of said leversand nearer to the pivotal center of one lever and farther from thepivotal center of the other lever, and means operable at will forrendering said vibrator inoperative to move the ribbon to the printingpoint.

33. In a typewriting machine, the combination of a ribbon vibrator, twoactuating levers therefor, an intermediate connection between saidlevers, a platen, platen shifting mechanism, means under control of saidplaten shifting mechanism for shifting said connection independently ofsaid levers, and means operable at will for rendering said vibratorinoperative to move the ribbon to the printing point.

34. In a typewriting machine, the combination of a ribbon vibrator, twoactuating levers therefor, an intermediate connection between saidlevers, a platen, platen shifting mechanism, means under control of saidplaten shifting mechanism for shifting said connection independently ofsaid levers, hand actuated means operable at will for shifting saidconnection, and means operable" at will for rendering said vibratorinoperative to move the ribbon to the printing point.

35. In a typewriting machine, the combination of a ribbon vibrator, tworibbon vibrator actuating levers having substantially parallel arms, anintermediate connection between said substantially parallel arms, meansfor shifting the connection independently of said levers andlongitudinally of said arms, and means operable at will for renderingsaid vibrator inoperative to move the ribbon to the printing point.

36. In a typewriting machine, the combination of a ribbon vibrator, tworibbon vibrator actuating levers having substantially parallel arms, anintermediate connect-ion be tween said substantially parallel arms,means for shifting the connection longitudinally of said arms, a platen,platen shifting means, means under control of said platen shitting meansfor shifting said connection independently of said levers andlongitudinally of said substantially parallel arms, and means operableat will for rendering said vibrator inoperative to move the ribbon tothe printing point.

37. In a typewriting machine, the combination of a ribbon vibrator, tworibbon Vibrator actuating levers having substan tially parallel arms, anintermediate connection between said substantially parallel arms, meansfor shifting the connection longitudinally of said arms, a platen,platen shifting means, means under control of said platen shifting meansfor shifting said connection independently of said levers andlongitudinally of said substantially parallel arms, hand actuated meansoperable at will for shifting said connection, and means op erable atwill for rendering said vibrator inoperative to move the ribbon to theprinting point.

38. In a typewriting machine, the combination of a ribbon vibrator, auniversal bar, intermediate angular levers between said universal barand vibrator, said angular levers being mounted on fixed axes, aconnection between said angular levers, and means for shifting saidconnection relatively to said levers while the levers remain fixed.

39. In a typewriting machine, the combination of a ribbon vibrator, auniversal bar, intermediate angular levers between said universal barand vibrator, a connection between said angular levers, a platen, platenshifting means, and means under control of the platen shifting means forshifting said connection relatively to said levers while the leversremain fixed.

40. In a typewriting machine, the com bination of a ribbon vibrator, auniversal bar, intermediate angular levers between said universal barand vibrator, said levers being mounted on fixed axes, a connectionbetween said angular levers, a platen, platen shifting means, meansunder control of the platen shifting means for shifting said connectionrelatively to said levers, and hand controlled means operable at willfor shift ing said connection.

etl. In a typewriting machine, the combination of a ribbon vibrator, auniversal bar, intermediate angular levers between said universal barand vibrator, said levers being mounted on fixed axes, a connectionbetween said angular levers, means for shifting said connectionrelatively to said levers, and hand actuated means operable at will forrendering the universal bar inoperative on said angular levers.

42. In a typewriting machine, the combination of a ribbon vibrator, auniversal bar, intermediate angular levers between said universal barand vibrator, said levers being mounted on fixed axes, a connectionbetween said angular levers, a platen, platen shifting means, meansunder control of the platen shifting means for shifting said connectionrelatively to said levers, and hand actuated means operable at will forrendering the universal bar inoperative on said angular levers.

4:3. In a typewriting machine, the combination of a ribbon vibrator, auniversal bar, intermediate angular levers between said universal barand vibrator, said levers being mounted on fixed axes, a connectionbetween said angular levers, a platen, platen shitting means, meansunder control of the platen shifting means for shifting said connectionrelatively to said levers, hand con trolled means operable at will forshifting said connection, and hand actuated means operable at will forrendering the universal bar inoperative on said angular levers.

4:4. In a typewriting machine, the combination of a ribbon vibrator,vibrator actuating levers'having substantially parallel arms slottedlongitudinally thereof, a connecting device engaging the slottedparallel arms of said actuating levers and movable independently of saidlevers and longitudinally of the slotted arms thereof, and means foreffecting a movement of said connecting device longitudinally of theslotted under control of said platen shifting means for effecting amovement of said connecting device longitudinally of the slotted arms ofsaid levers.

46. In a typewriting machine, the combination of a ribbon vibrator,vibrator actuating levers having substantially parallel arms slottedlongitudinally thereof, a connecting device engaging the slottedparallel arms of said actuating levers and movable independently of saidlevers and longitudinally of the slotted arms thereof, means foretl'ecting a movement of said connecting device longitudinally of theslotted arms of said levers, and hand actuated means operable at willfor rendering said vibrator inoperative to move the ribbon to theprinting point.

457. In a typewriting machine, the combination of a ribbon vibrator,vibrator actuating levers having substantially parallel arms slottedlongitudinally thereof, a connecting device engaging the slottedparallel arms of said actuating levers and movable independently of saidlevers and longitudinally of the slotted arms thereof, a platen, aplaten shifting means, means under control of said platen shitting meansfor efi ecting a movement of said connecting device longitudinally ofthe slotted arms of said levers, and hand actuated means operable atwill for rendering said vibrator i inoperative to move the ribbon to theprinting point.

48. In a typewriting machine, the combination of a ribbon vibrator, twoangular actuating levers each having a substantially horizontallydisposed arm and a substantially vertically disposed arm, asubstantially vertically shittable connection between the verticallydisposed arms or said angular levers, and means for shifting saidconnection independently of said levers.

49. In a typewriting machine, the combination of a ribbon vibrator, twoactuating levers having substantially parallel arms which extend inopposite directions from the fulcrums of said levers, a connectionbetween said parallel lever arms, and means i for shifting saidconnection longitudinally of said parallel lever arms.

50. In a typewriting machine, the combination of a ribbon vibrator, twoangular actuating levers each having a substantially horizontallydisposed arm and a substantially vertically disposed arm, asubstantially vertically shittable connectirm independent of said leversand between the vertically disposed arms thereof, means for shittingsaid connection, a platen, platen shitting means, and means undercontrol of the platen shitting means for shifting said connectionrelatively to said levers.

51. In a typewriting machine, the combination of a ribbon vibrator, twoangulari actuating levers mounted on fixed axes and each having asubstantially horizontally disposed arm and a substantially verticallydisposed arm, a substantially vertically shitt able connection betweenthe vertically disposed arms of said angular levers, means for shiftingsaid connection, a platen, platen shitting means, means under control ofthe platen shifting means for shifting said connection relatively tosaid levers, and hand actuated means operable at will for shifting saidconnection.

In a typewriting machine, the combination of a ribbon vibrator, twoangular actuating levers mounted on fixed axes and each having asubstantially horizontally disposed arm and a substantially verticallydisposed arm, a substantially vertically shiftable connection betweenthe vertically disposed arms of said angular levers, means for shiftingsaid connection relatively to said levers, and means for rendering saidribbon vibrator inoperative to move the ribbon to the printing point.

53. In a typewriting machine, the combination of a ribbon vibrator, twoangular actuating levers mounted on fixed axes and each having asubstantially horizontally disposed arm and a substantially verticallydisposed arm, a substantially vertically shiftable connection betweenthe vertically disposed arms of said angular levers, means for shiftingsaid connection, a platen, platen shifting means, means under control ofthe platen shifting means for shifting said connection relatively tosaid levers, and means for rendering said ribbon vibrator inoperative tomove the ribbon to the printing point.

5-4. In a typewriting machine, the combination of a ribbon vibrator, twoangular actuating levers mounted on fixed axes and each having asubstantially horizontally disposed arm and a. substantially verticallydis posed arm, a substantially vertically shittable connection betweenthe vertically disposed arms of said angular levers, means for shiftingsaid connection, a platen, platen shifting means, means under control ofthe platen shifting means for shifting said connection relatively tosaid levers, hand actuated means operable at will for shifting saidconnection, and means for rendering said ribbon vibrator inoperative tomove the ribbon to the printing point.

55. In a typewriting machine, the combination of a ribbon vibrator, twoactuating levers having substantially parallel arms which extend inopposite directions from the fulcrums of said levers, a connectionbetween said parallel lever arms, a platen, platen shitting means, andmeans under control of said platen shitting means for shitting saidconnection.

56. In a typewriting machine, the combination of a ribbon vibrator, twoactuating levers having substantially parallel arms which extend inopposite directions from the fulcrums of said levers, a connectionbetween said parallel lever arms, a platen,

"platen shifting means, means under control of said platen shiftingmeans for shifting said connection, and hand actuated means operable atwill for shifting said connection.

57. In a typewriting machine, the combination of a ribbon vibrator, twoactuating levers having substantially parallel arms which extend inopposite directions from the fulcrums of said levers, a connectionbetween said parallel lever arms, means for shifting said connectionlongitudinally of said parallel lever arms, and means for rendering saidribbon vibrator inoperative to move the ribbon to the printing point.

58. In a typewriting machine, the combination of a ribbon vibrator, twoactuating levers having substantially parallel arms which extend inopposite directions from the fnlcrums of said levers, a connectionbetween said parallel lever arms, a platen, platen shifting means, meansunder control of said platen shifting means forishifting saidconnect-ion, hand actuated means operable at will for shifting saidconnection, and means for rendering said ribbon vibrator inoperative tomove the ribbon to the printing point.

59. In a typewriting machine, the combination of a ribbon vibrator,actuating means for the vibrator comprising two levers one of whichtransmits motion to the other, and controlling means for effecting achange in the effective lengths of certain of the arms of said leverswhile the levers remain at rest, the effective length of an arm on onelever being decreased as the effective length of an arm on the otherlever is increased.

(30. In a typewriting machine, the combination of a ribbon vibrator,actuating means for the vibrator comprising two levers one of whichtransmits motion to the other, controlling means for effecting a changein the effective lengths of certain of the arms of said levers, theeffective length of an arm on one lever being decreased as the effectivelength of an arm on the other lever is increased, a platen, means forshifting said platen, and means controlled by said shifting means forshifting said controlling means independently of said levers and whilethe levers remain at rest.

61. In a typewriting machine, the combination of a ribbon vibrator,actuating means for the vibrator comprising two levers one of whichtransmits motion to the other, controlling means for effecting a changein the effective lengths of certain of the arms of said levers withoutaffecting the normal position of the vibrator, the eflective length ofan arm on one lever being decreased as the effective length of an arm onthe other lever is increased, a platen, means for shifting said platen,means controlled by said platen shifting means for shifting saidcontrolling means, and hand actuated means operable at will for shiftingsaid controlling means.

62. In a typewriting machine, the combination of a ribbon vibrator,actuating means for the vibrator comprising two levers one of whichtransmits motion to the other, controlling means for effecting a changein the effective length of certain of the arms of said levers withoutaffecting the normal position of the vibrator, the effective length ofan arm on one lever being decreased as the effective length of an arm onthe other lever is increased, a platen, means for shifting said platen,means controlled by said platen shifting means for shifting saidcontrolling ieans, hand actuated means operable at will for shiftingsaid controlling means, and hand actuated means operable at will forrendering the ribbon vibrator inoperative to move the ribbon to theprinting point.

63. In a typewriting machine, the combination of a ribbon, means forfeeding said ribbon longitudinally, a ribbon vibrator, leveragemotion-transmitting mechanism for actuating said vibrator, saidmotion-transmitting mechanism including a device which is automaticallyshifted to change the leverage of said mechanism during the longitudinalfeed of the ribbon, and hand actuated means operative to determine theextent of change of leverage effected during the longitudinal feed ofthe ribbon.

Get. In a typewriting machine, the combination of a ribbon vibrator,leverage motiontransmitting mechanism for actuating said vibrator, saidmotion-transmitting mechanism including a link which is automaticallyshifted to change the leverage of said mechanism without affecting thenormal position of the vibrator, and means for lengthening andshortening said link.

65. In a typewriting machine, the combination of a platen shiftable tochange the case position thereof, a ribbon vibrator, leveragemotion-transmitting mechanism for actuating said vibrator, saidmotion-transmitting mechanism including a link which is automaticallyshifted to change the leverage of said mechanism during the caseshifting movements of the platen without affecting the normal positionof the vibrator, and hand actuated means operable at will for shiftingsaid link.

66. In a typewriting machine, the combination of a ribbon vibrator,leverage motiontransmitting mechanism for actuating said vibrator, saidmotion-transmitting mechanism including two levers and a link which isshiftable along the arms of said levers to vary the link relatively tothe fulcrum of bination of a ribbon vibrator, a universal bar,intermediate motion-transmitting mechanism between the universal bar andribbon vibrator, said mechanism including leverage varying mechanism anda pivoted link having a hook-like portion that is adapted to engage theuniversal bar, hand actuated 'means operable at will for effecting apivotal movement of the link toward and away from the universal bar tooperatively connect and disconnect the universal bar and vibrator, andindependent means for varying he leverage changing mechanism.

(38. In a typewriting machine, the combination of a platen, platenshifting means including an arm, a ribbon vibrator, ribbon vibratoractuating means, a connecting device between said arm and the ribbonvibrator actuating means, and hand actuated means operable at will foradjusting said connecting device with reference to said arm andindependently of the ribbon vibrator actuating means.

69. In a typewriting machine, the combination of a platen, platenshifting means including an arm, a ribbon vibrator, ribbon vibratoractuating means, a connecting device between said arm and the ribbonvibrator actuating means, and hand actuated de vices operable at willfor adjusting said connecting device with reference to said arm andindependently of the ribbon vibrator actuating means and which permitsthe connecting device to be moved independently of said hand actuateddevice.

70. In a typewriting machine, the combination of a ribbon vibrator,means for effecting different extents of throw of said ribbon vibrator,said means comprising two levers, a connecting device between saidlevers, and means for shifting said device independently of said leversand nearer to the pivotal center of one lever as said de vice is shiftedfarther from the pivotal center of the other lever.

71. In a typewriting machine, the combination of a ribbon vibrator, andmeans for effecting different extents of throw of said ribbon vibrator,said means comprising two levers, a connecting device between saidlevers, and means for shifting said device independently of said leversand nearer to the pivotal center of one lever as said device is shiftedfarther from the pivotal center of the other lever while both of saidlevers remain at rest.

'72. In a typewriting machine, the combination of a platen, platenshifting means including a part having a slot therein, a

ribbon vibrator, means for actuating said vibrator, the actuating meansincluding a part that is movable in the slot, and hand actuated meansfor moving said part to different positions in the slot independently ofsaid slotted part.

73. In a typewriting machine, the combination of a platen, platenshifting means including a part having a slot therein, a ribbonvibrator, means for actuating said vibrator, the actuating meansincluding a part that is movable with said platen shifting means and ismovable independently thereof in the slot, and hand actuated meansoperable at will for moving said part independently of the platenshifting means.

74. In a typewriting machine, the combination of a platen, means forshifting said platen to change the ease position thereof, a vibratorwhich remains fixed during the case shifting movements of the platen,means for controlling the vibrator to bring the same portion of theribbon to the printing point whether the platen be in the upper or lowercase position, and automatically actuated means for controlling saidvibrator to give a cross feed of the ribbon to use different widthwiseportions thereof.

75. In a typewriting machine, the combination of a platen, means forshifting said platen to change the case position thereof, a vibratorwhich remains fixed during the case shifting movements of the platen,means for controlling the vibrator to bring the same portion of theribbon to the printing point whether the platen be in the upper or lowercase position, automatically actuated means for controlling saidvibrator to give a cross feed of the ribbon to use different widthwiseportions thereof, and hand controlled means operable at will forchanging said automatic means to vary the extent of cross feed of theribbon.

76. In a typewriting machine, the combination of a platen, means forshifting said platen to change the case position thereof, a ribbonvibrator which remains fixed during the shifting movements of theplaten, compensating means controlled by the platen shifting means forenabling the vibrator to bring the ribbon to the printing pointirrespective of the case position of the platen, and automaticallyactuated means cooperative with said compensating means to vary thethrow of the ribbon vibrator to effect a crosswise feed of the ribbon.

77. In a typewriting machine, the combination of a platen, means forshifting said platen to change the case position thereof, a vibratorwhich remains fixed during the case shifting movements of the platen, aribbon having fields of different characteristics, means for controllingthe vibrator to bring any desired field of the ribbon to the printingpoint whether the platen be in the upper or lower case position, andautomatically actuated means cooperative with said controlling means tocause a crosswise feed of the ribbon to be effected in order to usedifferent widthwise portions of the ribbon.

78. In a typewriting machine, the combination of a platen, means forshifting said platen to change the case position thereof, a vibratorwhich remains fixed during the case shifting movements of the platen, aribbon having fields of different characteristics, means for controllingthe vibrator to bring any desired field of the ribbon to the printingpoint whether the platen be in the upper or lower case position,automatically actuated means cooperative with said controlling means tocause a crosswise feed of the ribbon to be effected in order to usedifferent widthwise portions of the ribbon, and hand actuated meansoperable at will for changing said automatically actuated means to varythe extent of crosswise feed of the ribbon.

79. In a typewriting machine, the combination of a platen, means forshifting said platen to change the case position thereof, a vibratorwhich remains fixed during the case shifting movements of the platen,motiontransmitting devices for actuating said vibrator, means controlledby the case shifting,

movement of the platen to effect a change in the relation of the partsof said motiontransmitting devices in order that the same portion of theribbon may be brought to the printing point whether the platen be in theupper or lower case position, and auto.

matically actuated means cooperative with said motion-transmittingdevices to cause a transverse feed of the ribbon to be effected in orderto use difierent widthwise portions of the ribbon.

80. In a typewriting machine, the combination of a platen, means forshifting said platen to change the case position thereof, a vibratorwhich remains fixed during the case shifting movements of the platen,motiontransmitting devices for actuating said vibrator, means controlledby the case shifting movement of the platen to efi'ect a change in therelation of the parts of said motiontransmitting devices in order thatthe same portion of the ribbon may be brought to the printing pointwhether the platen be in the upper or lower case position, automaticallyactuated means cooperative with said mo tion-transmitting devices tocause a transverse feed of the ribbon to be effected in order to usedifi'erent widthwise portions of the ribbon, and hand actuated meansoperable atwill for changing the extent of crosswise feed of the ribbon.

81. In a typewriting machine, the combination of a platen, means forshifting said platen to change the case position thereof, a ribbonvibrator, difierential leverage mechanism for actuating said vibrator,means un der control of the platen shifting means for affecting saiddifferential leverage mechan: ism so as to bring the same portion of theribbon to the printing point at each printing operation whether theplaten be in the upper or lower case position, and automaticallyactuated means cooperative with said diflerential leverage mechanism forautomatically bringing different widthwise portions of the ribbon to theprinting point at printing operations.

82. In a typewriting machine, the combination of a platen,means forshifting said platen to change the case position thereof, a ribbonvibrator, differential leverage mechanism for actuating said vibrator,means under control of the platen shifting means for affecting saiddifi'erential leverage mechanism so as to bring the same portion of theribbon to the printing pointat each printing operation whether theplaten be in the upper or lower case position, automatically actuatedmeans cooperative with said ditien ential leverage mechanism forautomatically bringing different widthwise portions of the ribbon to theprinting point atprinting op erations, and hand actuated means forchanging said automatically actuated means to vary the extent ofwidthwise feed of the ribbon.

Signed at the borough of Manhattan, city of New York, in the county ofNew York, and State of New York, this 14th day of February A. D. 1908.

JOHN T. SCHAAFF.

\Vitnesses CHARLES E. SMITH, J. B. DEEVES.

